Gwegi

Hello, Yesterday, i leveled UP my butterfree at the level 17 and the game proposed me to learn the attack psybeam. However, i have been disconnected from the silver server at this moment. At my return, the game didn't propose me to learn this attack. I tried to level UP in ordre to see if i can solve the problem. But nothing happened. How Can i do ? Is it possible to have an ils save before that my butterfree level UP at the level 17 ? I play on Android. Thanks you for jour help. Regards, Gwegi.